Chemistry
Hydrogen can be prepared with the metal zinc by using
(i) acid
(ii) alkali
(iii) water
Give an equation in each case.
Hydrogen
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Answer
(i) Zn + 2HCl ⟶ ZnCl2 (dil.) + H2 ↑
(ii) Zn + 2NaOH ⟶ Na2ZnO2 + H2 ↑
(iii) Zn + H2O ⟶ ZnO + H2 ↑
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